Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1996-03-29
1998-06-23
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
408103, 408 95, 408241S, B23B 3500, B23B 4100
Patent
active
057695741
ABSTRACT:
A device and method for boring pocket-holes in frame members having a miter joint to prepare them for final assembly. Two frame members are placed on the positioning frame of the invention and clamped against the positioning frame and together at the miter joint with a moveable clamp, which has a clamp member having resilient clamping pads to contact the face surfaces of the picture frame members. The clamp member also includes a guide assembly which causes the clamping pads to apply clamping force to each of the frame members to hold them securely and to urge them together at the miter joint. A drill assembly supports a drill bit and carries the drill bit along a path to drill a pocket-hole having a centerline passing through the frame member on the first surface, passing obliquely across the miter joint and into the frame member on the second surface. The drill carriage repositions the drill bit to bore another pocket-hole which also passes through the frame member on the first surface, obliquely across the miter joint, and into the frame member on the second surface, and the drill carriage can be adjusted to vary the location of the second pocket-hole. The drill bit bores pocket-holes which have a pilot hole portion, a shank hole portion, and a countersink hole portion.
REFERENCES:
patent: 2790259 (1957-04-01), Havens
patent: 3552050 (1971-01-01), Marateck
patent: 3626513 (1971-12-01), Pylak
patent: 3673674 (1972-07-01), Catulle
patent: 3836274 (1974-09-01), Heuschen et al.
patent: 4489512 (1984-12-01), Schovee
patent: 4955766 (1990-09-01), Sommerfeld
patent: 5059090 (1991-10-01), Bobroff et al.
patent: 5149236 (1992-09-01), Rapayelian
patent: 5380119 (1995-01-01), Hadden
patent: 5553645 (1996-09-01), Durney
"Save A Step When Drilling Pocket Holes", p. 23. of Leichtung catalog.
Howell Daniel W.
Tsai Henry W. H.
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